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Fly Formula™

Repel irritating flies and insects from the inside out

359 reviews. 4.8 / 5
  • Reviews
  • Technical
  • Feeding Guide
David - 10/06/2026 19:51
Appears to me working, as there are no longer midges constantly annoying my horse!
Martine - 03/06/2026 19:43
An ideal product that we u see during the Summer months.
Guest - 01/06/2026 00:16
Good products
Sam - 30/05/2026 22:34
My horse is extremely sensitive to the flys, started the fly formula early to get it in his system, he doesn’t seem as stressed and bothered by them, have ordered my next tub!!

Thanks again for another fab product Feedmark.
Rachael - 20/05/2026 19:08
Ponies happy to eat it and they have less flies round them compared to nearby horses.2nd year using it
Samantha - 10/05/2026 08:28
This stuff is great!! 2 weeks in My horse has stopped rubbing his mane and tail so it appears to be working. Smells and looks very appetising too!! Thank you Feedmark for another great product.
Jo - 03/05/2026 13:53
This product is the best repelent ever. I keep my ponies with me at home and we live in the middle of a wood. Before fly formula i was trying everything and nothing really kept the flies, midges, wasps, and all the insects especially horse flies which are enormous where we are but although still a slight problem with this formula they are much reduced around the animals.
When they take it internally the pores of the skin evaporate the smell i think and they stay away. Thank you Feedmark for solving my problem. **
Linda - 02/05/2026 19:11
I’ve used this product over 20 years and it definitely helps by greatly reducing the scratching and rubbing of the horses when this supplement is included in their feeds
Guest - 02/05/2026 11:11
Really nice product and it really works. My horse can be fussy but is happy eating it
Linda - 01/05/2026 19:05
Excellent product my horses love it definitely works as described.

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Nutrition Information

Fly Formula™ is an oral fly deterring supplement, designed to reduce irritation from flies. When ingested on a daily basis, the pungent aroma of the ingredients passes through the skin to discourage flies.

Garlic granules contain a Sulphur compound, which is secreted through the skin. Insects taste via their feet, and those landing on the horse dislike this Sulphur, and so are less likely to bite the horse. The added Fenugreek seeds potentiate this effect, and along with other aromatic herbs known to be disliked by insects, such as Lemon peel, Peppermint and Rosemary, help to repel unwanted attention. In addition to this, ingredients that optimise skin health, such as Chamomile, Nettle, and Linseed help to soothe any areas affected by pesky flies.

Composition

Garlic granules, Micronised linseed, Mint leaves, Rosemary leaves, Lemon peel, Chamomile flowers, Fenugreek seeds, Nettle leaves, Peppermint powder.

Additives

  Additive number per kg
Digestive enhancers    
Yea-Sacc live yeast (Saccharomyces cerevisiae CBS 493.94) 4a1704 5,300,000,000cfu

Analytical

Crude protein 18.4%
Crude oils & fats 8.3%
Crude fibre  8.8%
Crude ash 5.1%
Sodium  <0.1%

Feeding Guide

 

Weight of Horse/Pony         Amount per day                                              
Up to 250kg 1 scoop
250kg - 400kg 1 ½ scoops
400kg - 600kg 2 scoops
Over 600kg 2 ½ scoops

 

1 level (50ml) scoop of Fly Formula™weighs approximately 23.5g

Feed supplements should be fed according to body weight. Introduce to the horse's diet gradually, splitting between feeds (when applicable).

Fly Formula™is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.